Mock sample for your project: TransitFeeds API

The gravitational field of the earth is non-uniform. The geoid is the shape the
ocean surface would take if only gravity and the rotation of the Earth
were considered. The geoid is the surface that defines zero elevation.
The geoid height is the difference between an ideal reference ellipsoid and the geoid.
The gravity anomaly is the difference between the acceleration due to gravity on the Earth's surface and the value calculated assuming the reference ellipsoid.
The official Earth Gravitational Model EGM2008 was developed and released to the public by the National Geospatial-Intelligence Agency (NGA).
Our EGM2008 API provides on-demand access to the EGM2008 model, as implemented by the open-source GeographicLib Gravity library.
API requests must contain a key "API-Key" in the header (see code samples). Obtain a key from here.
Amentum Pty Ltd is not responsible nor liable for any loss or damage of any sort incurred as a result of using the API.
Copyright Amentum Pty Ltd 2021.

A simple API to get the current time based on a request with a timezone.

API for OpenAQ LCS

Access the most exhaustive, accurate and up-to-date collection of global and hyper-local geocoded events and activities across a wide range of categories and genres

The GeoDB API focuses on getting global city and region data. Easily obtain country, region, and city data for use
in your apps!
Filter cities by name prefix, country, location, time-zone, and even minimum population.
Sort cities by name, country code, elevation, and population - or any combination of these.
Get all country regions. Get all cities in a given region.
Display results in multiple languages. RESTful API adheres to industry best-practices, including
HATEOAS-style links to facilitate paging results.
Backed by cloud-based load-balanced infrastructure for resiliency and performance!
Data is periodically refreshed from GeoNames and WikiData.
Notes:
Since the database is periodically updated, this may very rarely result in certain cities
being marked deleted (e.g., duplicates removed). By default, endpoints returning city data will exclude
cities marked deleted. However, in the unlikely event that this occurs while your app is paging through a set
of affected results - and you care about the paged results suddenly changing underneath - specify
includeDeleted=SINCEYESTERDAY (or SINCELAST_WEEK if you're really paranoid!).
Useful Resources
SDKs
Angular,
Sample App
Java
JavaScript
Swagger Docs
Usage License

Global marine weather data from multiple sources in one single API with hourly resolution. Get your API key by visiting the Storm Glass web site.

Our atmosphere protects us from a hostile space radiation environment comprising high energy particles of solar and intergalactic origin. Solar radiation is significant during unpredictable and short lived solar flares and coronal mass ejections (CMEs); however, galactic cosmic radiation (GCR) is omnipresent. The GCR intensity varies with latitude, longitude, and time due to effects of solar activity on the interplanetary magnetic field, as well as the Earth's magnetic field. Space radiation collides with gases in the atmosphere, leading to a complex shower of high energy radiation, the intensity and composition of which varies spatially and temporally. Excessive exposure to radiation can damage DNA and lead to long-term health effects such as an increased risk of cancer. Resulting radiation levels at commercial aircraft altitudes are greater than at sea level due. Aircrew are classified as radiation workers in some countries; however, planning to limit their exposure, and monitoring, is generally lacking. Both real-time measurements and predictive models of radiation in the atmosphere are important to mitigate the radiation risk crew.
We host a RESTful API to models of cosmic ray induced ionising radiation in the atmosphere. The PARMA or CARI7 endpoints can be used to calculate Effective Dose or Ambient Dose Equivalent at a point.
The Route Dose API calculates the same quantities along a great circle route between two airports using CARI7.
API requests must contain a key "API-Key" in the header (see code samples). Obtain a key from here.
Help us improve the quality of our web APIs by completing our 2 minute survey here.
Amentum Pty Ltd is not responsible nor liable for any loss or damage of any sort incurred as a result of using the API.
Copyright Amentum Pty Ltd 2021.

Open API spec for Ideal Postcodes API (api.ideal-postcodes.co.uk)

The API ecotaco allows you to connect, create an account,
manage your credit cards and order rides.
Authentication
Ecotaco API use a system of application key and authentification token.
Application key :
The application key is generated by Ecota.co and unique to an application.
Before accessing EcoTa.co APIs, you need to register your application. Please supply the following information to [email protected]:
Application name
Company (if appropriate)
Contact name, phone and address
Contact email
Is this a web application, a desktop application, or an application running on a device?
Short description of your application
It must be passed on request : "accounts -> login", "accounts -> facebook login" and "accounts -> register" .
Authentification token :
The authentification token is retrieved at login or register of an user.
It must be passed in request for authenticate action in Authorization HTTP header.
Example :
Authorization: Token token=e55887022c1aca4c86abcc49e85ceb8a0c855d2af4d9fac75c08040a583dcde4
Language
On some of our resources, we filter the content displayed based on the Accept-Language header.
If the language is not defined or if we don't use the language defined in this header, we automatically use French as the default language.
EcoTa.co currently support two languages: English, French. ("en" and "fr")
Encoding
All requests and answers on EcoTa.co are in UTF-8.

Furkot provides Rest API to access user trip data.
Using Furkot API an application can list user trips and display stops for a specific trip.
Furkot API uses OAuth2 protocol to authorize applications to access data on behalf of users.

Weather Forecast and Historical Weather Observation Data via an convenient, restful API.